<template>
	<view v-if="goods_info.goods_name" class="goods-detail-container">
		<!-- 轮播图 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
			<swiper-item v-for="(item,index) in goods_info.pics">
				<image :src="item.pics_big_url" @click="preview(index)"></image>
			</swiper-item>
		</swiper>
		<!-- 商品信息区 -->
		<view class="goods-info-box">
			<!-- 商品价格 -->
			<view class="price">￥{{goods_info.goods_price}}</view>
			<!-- 商品信息主题区 -->
			<view class="goods-info-body">
				<!-- 商品名字 -->
				<view class="goods-name">{{goods_info.goods_name}}</view>
				<!-- 商品收藏 -->
				<view class="favi">
					<uni-icons type="star" size="18" color="gray"></uni-icons>
					<text>收藏</text>
				</view>
			</view>
			<!-- 运费区 -->
			<view class="yf">
				快递:免运费
			</view>
		</view>
		<!--  -->
		<rich-text :nodes="goods_info.goods_introduce"></rich-text>
		<!-- 商品导航区域 -->
		<view class="goods_nav">
			<uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
		</view>
	</view>
</template>

<script>
import {mapState , mapMutations , mapGetters} from 'vuex'
	export default {
		computed:{
			...mapState('m_cart',['cart']),
			...mapGetters('m_cart',['total'])
		},
		watch:{
			// total(newVal){
			// 	const findResult = this.options.find((x) => x.text === '购物车')
			// 	if(findResult){
			// 		findResult.info = newVal
			// 	}
			// }
			total:{
				handler(newVal){
					const findResult = this.options.find((x) => x.text === '购物车')
					if(findResult){
						findResult.info = newVal
					}
				},
				// 页面加载立即调用一次
				immediate:true
			}
		},
		data() {
			return {
				goods_info:{},
				options:[
					{
						icon: 'shop',
						text: '店铺',
						infoBackgroundColor:'#007aff',
						infoColor:"red"
					}, 
					{
						icon: 'cart',
						text: '购物车',
						info: 0
					},
				],
				buttonGroup: [
					{
						text: '加入购物车',
						backgroundColor: '#ff0000',
						color: '#fff'
					},
					{
						text: '立即购买',
						backgroundColor: '#ffa200',
						color: '#fff'
					}
				]
			}
		},
		onLoad(options) {
			const goods_id = options.goods_id
			this.getGoodsDetail(goods_id)
		},
		methods:{
			...mapMutations('m_cart',['addToCart']),
			// 通过商品id 获取商品详情数据
			async getGoodsDetail(goods_id){
				const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
				if(res.meta.status !== 200) return uni.$showMsg()
				// 通过正则 修改goods_introduce 内的 样式
				res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,'<img style="display:block;"').replace(/webp/g,'jpg')
				this.goods_info = res.message
				console.log(res)
			},
			preview(i){
				// 微信大图预览组件
				uni.previewImage({
					current:i,
					// map 每循环一次都会得到一个item项此处为x  且返回值为新数组
					urls:this.goods_info.pics.map(x=>x.pics_big_url)
				})
			},
			onClick(e){
				console.log(e)
				if(e.content.text === '购物车'){
					uni.switchTab({
						url:'/pages/cart/cart'
					})
				}
			},
			buttonClick(e){
				// 加入购物车
				if(e.index == 0){
					console.log(e);
					// 组织商品的信息对象
					const goods = {
						goods_id: this.goods_info.goods_id,       // 商品的Id
						goods_name: this.goods_info.goods_name,   // 商品的名称
						goods_price: this.goods_info.goods_price, // 商品的价格
						goods_count: 1,                           // 商品的数量
						goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
						goods_state: true                         // 商品的勾选状态
					}
					// 调用addTocart方法
					this.addToCart(goods)
				}
			}
		}
	}
</script>

<style lang="scss" scoped>
.goods-detail-container{
	padding-bottom: 50px;
}
swiper{
	height: 750rpx;
	image{
		width: 100%;
		height: 100%;
	}
}
// 商品信息区域的样式
.goods-info-box {
  padding: 10px;
  padding-right: 0;

  .price {
    color: #c00000;
    font-size: 18px;
    margin: 10px 0;
  }

  .goods-info-body {
    display: flex;
    justify-content: space-between;

    .goods-name {
      font-size: 13px;
      padding-right: 10px;
    }
    // 收藏区域
    .favi {
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }

  // 运费
  .yf {
    margin: 10px 0;
    font-size: 12px;
    color: gray;
  }
}
// 
.goods_nav{
	position: fixed;
	bottom: 0;
	left: 0;
	width: 100%;
}
</style>
